Photo-Electrochemical Glycerol Conversion over a Mie Scattering Effect Enhanced Porous BiVO4 Photoanode

Cheng Lin; Chaoran Dong; Sungsoon Kim; Yuan Lu; Yulan Wang; Zhiyang Yu; Yu Gu; Zhiyuan Gu; Dong Ki Lee; Kan Zhang; Jong Hyeok Park

doi:10.1002/adma.202209955

Photo-Electrochemical Glycerol Conversion over a Mie Scattering Effect Enhanced Porous BiVO₄ Photoanode

Adv Mater. 2023 Apr;35(15):e2209955. doi: 10.1002/adma.202209955. Epub 2023 Mar 6.

Authors

Cheng Lin¹, Chaoran Dong¹, Sungsoon Kim², Yuan Lu², Yulan Wang³, Zhiyang Yu³, Yu Gu¹, Zhiyuan Gu⁴, Dong Ki Lee^{2

5

6

7}, Kan Zhang¹, Jong Hyeok Park^{2

5}

Affiliations

¹ School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China.
² Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-749, Republic of Korea.
³ College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fujian, 350108, P. R. China.
⁴ College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan, 030024, P. R. China.
⁵ Department of Chemical and Biomolecular Engineering, Yonsei-KIST Convergence Research Institute, Yonsei University, Seoul, 03722, Republic of Korea.
⁶ Clean Energy Research Center (KIST) and Division of Energy and Environment Technology, KIST School, University of Science and Technology, Seoul, 02792, Republic of Korea.
⁷ Graduate School of Energy and Environment, Korea University, Seoul, 02841, Republic of Korea.

PMID: 36692193
DOI: 10.1002/adma.202209955

Abstract

The photo-electrochemical (PEC) oxidation of glycerol (GLY) to high-value-added dihydroxyacetone (DHA) can be achieved over a BiVO₄ photoanode, while the PEC performance of most BiVO₄ photoanodes is impeded due to the upper limits of the photocurrent density. Here, an enhanced Mie scattering effect of the well-documented porous BiVO₄ photoanode is obtained with less effort by a simple annealing process, which significantly reduces the reflectivity to near zero. The great light absorbability increases the basic photocurrent density by 1.77 times. The selective oxidation of GLY over the BiVO₄ photoanode results in a photocurrent density of 6.04 mA cm^-2 and a DHA production rate of 325.2 mmol m^-2 h^-1 that exceeds all reported values. This work addresses the poor ability of nanostructured BiVO₄ to harvest light, paving the way for further improvements in charge transport and transfer to realize highly efficient PEC conversion.

Keywords: BiVO 4; Mie scattering; glycerol oxidation; light harvesting; porous films.

Abstract

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